Mixing ink

Cigarette wine boxes and other trademark decoration products in commodity packaging are usually printed with spot colors during printing. Spot colors of different colors require printing operators to deploy inks. In order to meet the requirements for the quality of printed materials, they are used as printing machines. The operator must understand the common sense of ink transfer and strive to master the technology of ink transfer.
In general, the color of the proofs is not exactly the same as the color reproduced with the ink. It can only be said that the color of the formulated ink is closest to the color of the proofs.
First, the laws of color change must be mastered in the basic knowledge of color science.
1, the deployment of ink is the use of three primary colors of pigment Y, M, C, according to a certain proportion of the principle of mixing black to carry out.
2. The three primary color inks Y, M, and C can be mixed in equal proportions to mix black, and with different proportions of diluting agents, neutral ash can be obtained in different degrees.
3, three primary colors ink Y, M, C mixed in different proportions can be different colors of the inter-color or complex color, Y, M, C three primary colors of the ink is R, G, B, Y, M, C is a complex color, Note that the hue of the formulated ink is biased toward the hue of the large ink.
4. The two primary colors of ink are mixed in equal amounts to obtain the standard color.
Second, the color method 1, chromatography color comparison method. For example, on-site full-size spot colors on the color drafts, and the ratio of the amount of ink that matches the color on the chromatogram and color scale. From the chromatogram, you can find the number of dots of the percentages of the Y, M, and C versions of the halftone dot colors.
2. The color three properties comparison method compares the brightness, hue, and saturation of the color of the ink that the color sample is prepared with.
1 If there is a difference in brightness, it can be corrected by adding a diluting agent.
2 If there is a difference in hue, a certain color, you can use the complementary color rule to correct, but this will increase the neutral gray, reduce the black lightness.
Third, the specific requirements of the deployment of ink 1, the hue of the ink must meet the color design of the interior design, try to narrow the gap and strive to consistent color.
2. The inks formulated are too thick and too thick, and the ink should have a certain viscosity and fluidity.
3, full version of the field of tobacco, wine packaging and decorating, trademarks must be added to a certain amount of red, white dry oil, can not exceed 5% of the ink, dry oil add more will appear crystallization, affect the ink matte, dry If there is less oil, there will be back-face stickiness. Therefore, the amount of dry oil should be appropriate and must not be too much or too little.
4, choose a good quality ink, different manufacturers of ink original ink nature and hue are not the same, the best choice for a manufacturer of ink products.
5, when the ink transfer to consider the nature of the printed paper, rough paper, ink absorption is strong, the amount of ink consumed when printing, grasp the difference between the temperature increase and decrease the dry oil into.
6, the deployment of the ink requires a one-time enough, there is a slight surplus, to avoid the amount of ink transfer is not enough to use the deployment, the printed out of the hue is different, the amount of ink transferred to cause more waste of the original ink.
7, for the packaging design out of the color draft, a detailed analysis, strict calculation and control of the original ink and the added dilute agent ratio.
8, after the ink is transferred out, the color sample printed on the machine should be carefully compared with the color draft, there should be prompt correction of the hue error, wash the ink change color requires the ink fountain, ink roller clean, under normal circumstances need to clean many times, Avoid ink wash color change unclean make ink color cast problem.
9, the composition of the mixing ink composition and the amount of ink transfer records in detail, in order to archive the stub, the next time you repeat the printing as a reference.
Fourth, the method of deployment of light-colored inks Add dilute, white ink, Weili oil and other inks, collectively referred to as light-colored ink, the deployment process is:
1, according to the color draft and ink color analysis, the operator according to the color standard similar to the color of the diluting agent and the percentage of the original color ink, the initial determination of the required ratio, to be aware of.
2, in the diluting agent gradually added a small amount of the original ink, and to determine the color of ink to determine whether it is qualified.
3, it should be noted that in the dilute agent in the deployment of light-colored ink, and can not be added in the primary color ink diluting agent, because the primary color ink in the diluting agent in the development of strong, the original ink concentration is not good to grasp, thus wasting ink, At the same time, it is not easy to adjust the ink.
4, the deployment of light ink when the first test to do a small amount of test adjustment, until the hue reaches the color draft color, and then a small amount of test data matching parameters for large quantities of ink transfer.
5, under normal circumstances, the printing of colorful packaging and decoration on the ground, in order to achieve a shiny, uniform and thick ink products, you can use white ink and Weili oil as a dilute.
6, need the color of the field, dilute agent inside to add light to the deployment, so as not to affect the color effect of the former color.
Fifth, the deployment of dark ink method to deploy deep-color ink, only dark ink, no and rarely use dilute ink transfer, known as dark ink. The deployment process is:
1, according to the color of the original color analysis, determine the ratio of the main color and auxiliary colors, according to the percentage of the color standard to determine.
2, the number of printing to determine the weight of the deployment of ink, the proportion of the main ink and auxiliary ink to adjust the original ink, ink, dry oil, ink type, quantity, manufacturers for detailed registration.
3. According to subtractive color theory, the type of primary color ink should be used as little as possible during the transfer of ink, and the color can be adjusted with two kinds of original ink. It is better not to use three primary color inks to avoid the use of primary color inks and to reduce the ink. The transparency of the product affects the vivid color of the product.
4. When dark ink is adjusted, the first one is to refer to the ratio on the color standard, and the second is to use a small amount of primary color ink for debugging first, and the hue of ink formulated to meet the color draft requirements, and then transfer the ink in large quantities.
5, deployment of dark ink, sometimes still need to add a small amount of black ink for deployment, in order to achieve the desired color effect.